How stable is our solar system? Where all the planets ,we have today,around 4.5 billion years ago? I attended a public lecture awhile back in which the...

Back again for some more opinions. Ran across the assertion that Pentax eyepieces are highly regarded, even in comparison to Nagler's stuff. As a longtime...

Nice article in current S&T on an automated backyard observatory via off-the-shelf parts that operates from indoors. Any takers on this forum? Nytecam

http://www.physorg.com/news4231.html

Dear Friends, First light with the new AP160 will be tomorrow with an attempt to pursue some high-power high-resolution imaging of the lunar...

Version 6.2 of the free Windows real-time astronomy program RTGUI+S has just been released. The principal updates in this version a Improved "Best of the...

I have a question regarding the Orion 100ED. I recently purchased one and on artificial star testing, I find that outside focus revealed a symetrical pattern...

http://www.physorg.com/news4237.html

I'm going to buy a refractor to use as a portable solution and to complement my 8" Meade Starfinder (good for high power lunar and planetary work) for...

I have a question about drive motors. Today many manufacturers use stepper motors for their drives even if they are not GOTO types. I have two 10 inch Mathis...

DARK SKY MAGNETIC RIBBON Magnetic ribbons are a popular way to promote causes. If one were available promoting dark skies, would you be willing to buy...

Would be interesting if a voltage controlled lens focuser could be adapted for astronomical...

In the 80s and 90s there seemed to be a fad of using attractive and not so attractive women in ads for fine optical equipment. Whatever happened to that ...

Is Collimation hard to learn how to do?? Steve

Bad sci-fi at it's worst. The laundry list is so long, it's hard to know where to begin... First the good.. Some good cgi images.... so much for that... Now...

As an experiment in observation planning, I threw together a list of targets appropriate for small aperture telescopes in semi-light polluted suburban skies...

Anybody know if Vixens SP/GP motors will work on the Polaris mount. If I have to make brackets/adapters-no problem.

William Optics will be attending RTMC this coming Friday and Saturday. Everyone is welcome to come by and try out our latest products or ask us questions. In...

A Day to forget First real hot day out in the High Desert. Day didn't start off good at all, first thing to happen was to have the car's alernater go out...

Take your pick. I particularly recommend the seminars designated with the . Requires Realplayer or...